Panda酱2018-03-23 09:36:33
你好 notes book4 page 63 为什么OAS和callable/putable是同向变化呢?
回答(1)
Vincent2018-03-23 16:54:57
同学你好,volitality变大,option value变大,你看左边两列是这个关系。
callable bond value = pure bond - call option value. 因为call option 是给发行人的权利, option value high, callable value low.
putable bond value = pure bond + put option value. 因为put option 是给持有人的权利, option value high, putable value high.
然后
Vcall option = Z spread - OAS
volitility上升, V call option high, Z unchange, OAS low
Vput option = OAS - Z spread
volitility上升, V put option high, Z unchange, OAS high
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